The answer to why you feel that you brother-in-law is stalking you is completely dependent on details of your situation and his and cannot be answered in this forum.
Perhaps he is stalking you, perhaps not. Perhaps he's mentally unstable, or perhaps he's legitimately worried about his sister's safety.
Either way, why not invite him out to lunch in a public place and ask him. If he's unstable, you'll be protected, and if he has legitimate concerns, he'll be able to clear the air -- in a public place where you'll have witnesses if he gets violent.
There's no downside to having a man-to-man conversation in a public place. He can either admit or deny his behavior, and either way, there's unlikely to be any more sneaking around.
Your wife's brother is your brother-in-law.
Your half-brother...
Yes
My wifes brother in law!
would it be a brother in law? not sure about this one! Is it your husband/wifes daughters brother?
would it be a brother in law? not sure about this one! Is it your husband/wifes daughters brother?
Your grandmother's brother's wife is your great aunt.
Well, you are the brother in law to your wife's brother. There is no real title for your brother to her brother, they can be considered extented family members, though.
thats her brothers wifes brother.....
You're wife's brother's wife is your sister-in-law.
You are not related as you do not share a common ancestor.
Yes. As long as the egg belongs to your brother's wife and not you, you should be in the clear.